Trusted user interface for a secure mobile wireless device
a mobile wireless and user interface technology, applied in the field of trusted user interfaces for secure mobile wireless devices, can solve the problems of high security risk on the device, threats to the confidentiality and integrity of services, and data confidentiality and integrity breaches, and achieve the effect of no costly hardware duplication
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[0075] The program P.EXE is linked to the library L1.DLL. [0076] The library L1.DLL is linked to the library L0.DLL. [0077] [0078] P.EXE holds Cap1 & Cap2 [0079] L1.DLL holds Cap1 & Cap2 & Cap3 [0080] L0.DLL holds Cap1 & Cap2. [0081] Process P cannot be created, the loader fails it because L1.DLL cannot load L0.DLL. Since L0.DLL does not have a capability set greater than or equal to L1.LDLL, Rule 2 applies. [0082] Case 2: [0083] P.EXE holds Cap1 & Cap2 [0084] L1.DLL holds Cap1 & Cap2 & Cap3 [0085] L0.DLL holds Cap1 & Cap2 & Cap3 & Cap4 [0086] Process P is created, the loader succeeds it and the new process is assigned Cap1 & Cap2. The capability of the new process is determined by applying Rule 1; L1.DLL cannot acquire the Cap4 capability held by L0.DLL, and P1.EXE cannot acquire the Cap3 capability held by L1.DLL as defined by Rule 3.
2.3.2 Examples for Dynamically Loaded DLLs [0087] The program P.EXE dynamically loads the library L1.DLL. [0088] The library L1.DLL then dynamicall...
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